Buying a diamond can be a daunting tast for some. Diamonds are priced based off of 4 major categories, determined by the GIA. The Gemological Institute of America (GIA) was founded in 1931, and since then has developed more educational programs and tools for the trade than any other laboratory. Using and understanding the "4-C's" can be researched further on the GIA's website here.
Most of the antique/estate diamonds that we sell will be referred to as "Old European-cut" diamonds. These are brilliant round-cut diamonds that proceeded the contemporary "Round Modern Brilliant-cut diamond". The main difference is found in the proportions of the diamond, and that the old european has an "open culet" which is the bottom facet on the bottom point of the underside of the old european cut. As technology and understanding of stone-cutting has progressed over the past handful of centuries, stone-cutters have evolved the 57-58 facet brilliant diamond to accentuate and modify the refractivity and brilliance of a diamond, all with varying success. In the estate jewelry realm, we refer to old european-cut diamonds ranging in age from apx 1900-1950. For more on the history and evolution of the brilliant round-cut diamond, please refer to GIA's website here.
These elements aid all jewelers in evaluating and calculating of the value of a diamond. The market drives this price structure by putting a value on a stone, using the 4-c's, and in our antiquities these are most commonly the color and clarity aspects of a diamonds evaluation. Below please find a few helpful scales to understand the color and clarity descriptions that you will find on our diamond pieces listed for sale. The weight of a diamond is determined by carat weight. The term carat comes from an ancient practice of weighing stones, which originally weight against carab seeds, coming from the locus tree, which is where the unit gets its name from. In carat weights, the 1.00 mark is made out of on hundred points, as with any similar measuring scale, and 1.00 carat (ct.) is equal to 0.007 ounces. These small weights also determine the value of a diamond. Diamonds are so rare, that on average, it takes one ton (2,000 lbs) of raw earth to uncover a mere 0.33 carats of diamond! This astounding rarity means that a stone will increase in price must faster than most commodities because the weight is so small, and that on average, every 0.25 ct. there will be a significant price jump due to the rarity of these gems.
Victoriana typically only sells diamonds that are either estate, in their original mounting, or bought from dealers working on the secondary market. If you would like to find a loose diamond, we are more than happy to accommodate you in your search. Please contact firstname.lastname@example.org with your specific requests and budgetary concerns and he will be able see what is available from our current list of stone dealers, both locally and nationally.